Wordhoard is a term used to refer to a collection of words, particularly those stored in one's mind. However, there are several synonyms that can be used to replace this term. Some of these synonyms include "lexicon," "vocabulary," "word arsenal," "word collection," "word store," and "word stockpile." These terms all refer to the same concept of a person's collection of words stored in their memory. In literature, the term wordhoard is popularly used by poets like J.R.R. Tolkien, who coined the term Middle-earth's "wordhoard" to describe the vast collection of words in the imaginary land. Therefore, these synonyms can be helpful in enhancing writing by providing a variety of vocabulary choices.